Dear friends, I am new here and a friend has recommended this forum to me, my problem is after formatting hp 620 (windows seven ultimate) all the drivers were beautifully installed but the audio were lost from the speakers, I have sound from the headset, actually this problem is very common world wide, the guys who use linux did manage to solve this problem at their OS but till now couldn't find anyone solve it in Windows 7....thanx a lot for your time. Papillon